/* 
 *  Copyright (c) 2012 Daisuke Okanohara
  * 
 *   Redistribution and use in source and binary forms, with or without
 *   modification, are permitted provided that the following conditions
 *   are met:
 * 
 *   1. Redistributions of source code must retain the above Copyright
 *      notice, this list of conditions and the following disclaimer.
 *
 *   2. Redistributions in binary form must reproduce the above Copyright
 *      notice, this list of conditions and the following disclaimer in the
 *      documentation and/or other materials provided with the distribution.
 *
 *   3. Neither the name of the authors nor the names of its contributors
 *      may be used to endorse or promote products derived from this
 *      software without specific prior written permission.
 */

#ifndef PREFIX_SUM_PREFIX_SUM_HPP_
#define PREFIX_SUM_PREFIX_SUM_HPP_

#include <vector>
#include <stdint.h>
#include "PrefixSumNode.hpp"

namespace ds_vector{

class PrefixSum{
public:
  PrefixSum();
  ~PrefixSum();
  void Clear();
  void Insert(uint64_t ind, uint64_t val);
  void Increment(uint64_t ind, uint64_t val);
  void Decrement(uint64_t ind, uint64_t val);
  void Set(uint64_t ind, uint64_t val);
  uint64_t Get(uint64_t ind) const;
  uint64_t GetPrefixSum(uint64_t ind) const;
  uint64_t Find(uint64_t val) const;
  uint64_t Num() const{
    return num_;
  }
  uint64_t Sum() const {
    return sum_;
  }

private:
  PrefixSumNode root_;
  uint64_t num_;
  uint64_t sum_;
};


}

#endif // PREFIX_SUM_PREFIX_SUM64_HPP_
